Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b9c2238ecce7454…

MALICIOUS

PDF

40.4 KB Created: 2021-05-11 19:33:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5094c46c9d14a73a9d118713356c7857 SHA-1: d2823f416ddcbc9574533593009d7cd7eb6319ce SHA-256: 1b9c2238ecce7454d4e22740d4ef8cef4650676e5407b56baa08a6d6b5bb63bc
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it is a lure for a game hack, specifically targeting Minecraft accounts. It embeds a URL that points to a suspicious domain, likely serving as a redirector to malicious content. The document body, though partially garbled, contains phrases related to hacking and a call to action, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/how-to-hack-someones-minecraft-account-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000373c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x373C 25136 bytes
SHA-256: 158e09cf0f15f9b48961dde0a8751ac3d13f9e39a73f9ef27db8427bd305ed1a
font_01_sfnt_off000070ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CE 3252 bytes
SHA-256: 2ee6c90e08a3bb15861793471ac54363ba574c0b7325e311faaacd1259e88089
font_02_sfnt_off00007c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0E 18444 bytes
SHA-256: 747c8dea613db23d983de6ff9ef757178679d17f00ac663d4d23b9711c9580c4

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